12-14-2019, 01:50 AM
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#64132
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Senior Member
Join Date: Jul 2014
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Quote:
Originally Posted by ls1ac
It was called a triple point because there was only one point that all three phases could exist at one time. Change any one of the parameters and one of the phases will disappear.
triple point. The temperature and pressure at which a substance can exist in equilibrium in the liquid, solid, and gaseous states. The triple point of pure water is at 0.01°C (273.16K, 32.01°F) and 4.58 mm (611.2Pa) of mercury and is used to calibrate thermometers.
In physics and chemistry, the triple point of a substance is the temperature and pressure at which three phases (gas, liquid, and solid) of that substance may coexist in thermodynamic equilibrium
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